Automatic stoker.



No. 764,540. PATENTED JULY 5, 1904 P. J. HAMLER.

AUTOMATIC STOKER.

APPLIOATION 11.21) SEPT. 5, 1902.

N0 MODEL. 2 SHEETB-SHEET I.

WITNESSES: PINVEIR 7264/ @35 4 BY ATTORNEYS No. 764,540. PATENTED JULY 5, 1904.

P. J. HAMLER.

AUTOMATIC STOKER.

APPLICATION FILED SEPT. 5, 1903.

N0 MODEL. 3 SHEETS-SHEET 2.

Pi, 9' g r 4 2 6 3 M I z WITNES$ES: Q INVENTOR WI -M A ATTORNEYS.

laten ted Jul 5, 1904.

PETER J. HAM'LER, OF CHICAGO, lLLlNOlS.

nuroiuaric 'sroaen.

SPECIFICATION forming part of Letters Patent No. 764,540, dated July 5, 1904.

Application filed September 5, 1903. Serial No. 172,086. (No model.)

To all whom it may concern:

Be it known that 1, Par an J3 ITAMLER, a citi zen of the United States, residing at No. 1136 Garfield boulevard, in the city of Chicago, in the county of Cook and State of lllinois, have invented new and useful improvements in Automatic Stoker's. of which the following is a specification, reference being had to the accompany ing drawings, forming a part thereof.

This invention is an improvement in automatic stokcrs for furnaces.

It consists in the features of construction which are set out in the claims.

in the drawings, Figure 1 isa partly-sectional front elevation of a pair of my improved stokers, section being made through one of the stokers at the line 1 1 on Fig. Fig: 2 is a section at the line 2 2 on Fig. 1. Fig. 3 l8 a section at the line 3 3 on Fig. 1. Fig. 4

is a detail section at the line 4 L on Fig. 2. Fig. 5 is a detail section at the line 5 5 on Fig. 2.

l. have shown my improved stoke-r as adapted to be arranged in a gang or group of any number, according to the number of furnacefronts or fuel-feeding doors in the bank of furnaces to be supplied. 1 represents the flllIlflCG-rfIOI'lt: to which my improved stokers may be secured or against which they may be mounted and otherwise supported. Each stoker comprises a hopper 2, by means of which the fuel is conducted into afeeder, and feed-regulator comprising the case or shell 3 and the toothed feed roll or wheel at therein, onto which the fuel is lodged from the hopper and by which it is fed forward over the top side by means of the teeth 5 and delivered downward by gravity in a shower through the throat-piece 6. The rate-of fuel-supply inay be regulated by the adjustable gate 3, which is operated by a lever 3".and may be secured at any adjustment by means of the stud3, playing in the slot 3 of the bracket of and having a clamp-nut 3 to secure it at adjusted position. The case 3 is mounted on a hollow bracket A, constituting a fuel-intake extension, which is the direct means of scouring the device against the furnace-front and which is closed at the outer end by a door A. The throat-piece 6 is preferably cylindrical,

and the fuel is delivered downward through it into a horizontal chute 7, which is pivotally secured, by means ofthe throat-piece, to the feeder-case 3, so as to be oscillated about the axis of the throat. The chute '7 projects forward through the fuel-door opening of the furnace, so as to overhang the fire and deliver the fuel downward thereupon. This chute is tapered, widening from the throat to the discharge end, and is extended back from the throat a short distance, and in the lower side of the portion thus extending back it has a boss 8, through which there is pivotally connected a nozzle or terminal piece 9 of a steam-pipe which has its discharge-aperture 10 opening transversely with respect to said pivotal terminal and leading forwardly and registering with a discharge-aperture 10 in the boss, so that the steam admitted upwardly through said nozzle-terminal is discharged forwardly back of the fuel shower which falls through the throat 6 and impingingupon said fuel drives it forward and disperses it through the chute 7,causing it to be discharged in a horizontally-expanded sheet over the fire. In order to cause this fuel shower to reach all parts of the lire and for that purpose to be much more broadly spread than it would be merely by the natural spreading which would result from the impclling action of the steamjet and the tapered form of the chute, l pro vide for oscillating the chute about its pivotal support at the throat 6, and preferably I do this by means of the stcampipe, which has the nozzle-terminal 9. Said steam-pipe 11 leads from any convenient point of conncction with the boiler and has at any suitable point or points in the course from the boiler to the terminal 9 suitable joints permitting it to be reciprocated longitudinally i. 2., in direction transverse to the length of the chute 7a sufficient distance to cause its connection by means of the nozzle 9 with the rear end of the chute to oscillate the forward discharging end through a sufficient angle to adequately extend the range of discharge of the fuel over the fire. The feed-wheel 5 is mounted on the shaft 12, which is arranged to be rotated by any convenient means, (not shown,) and on said shaft l mount a cam 13, which engages what I term a shaker 14,.which is an angular bar hung on the shaft 12' and having one arm: 14:, extending parallel with the shaft and provided with astud and roll 15 for engaging therewith, as stated, the other arm, 14-", being extended down to the pipe 11 and engaging the same between proper stops 16 1 6 thereon, so that as the shaker is operated back and forth on the shaft 12 by means of the cam 13 the pipe 11 is similarly reciprocatcd, with the efiect of oscillating the chute, as described. This reciprocation of the pipe is rendered practicable by the form of its connection with the boiler, which comprises the two vertical leads 1717, connected by the horizontallead 18, extending between them in direction transverse to the pipe 11, both the vertical leads making swivel-joints at '19 19 with the horizontal lead. I have shown the cam and shaker connections described aslocated between two stokers and the steam-pipe as connected similarly to both of them, one at each side of the shaker 141. Similar steam connections can be made with the pipe 11 for as many additional stokers as there maybe in the group at corresponding positions with relation to the stoker's, respectively; but one cam and shaker will suiiice for operating the entire group, although, if desired, these devices may be repeated at inter- Vals in a long group. v

The detail structure of the pivotal connection of the chute with the fuel-throat 6 may b'e'understood from the drawings as compris- "ng ball-bearings at 20, for the purpose of (which the throat-piece 6 has the collar 21 at the upper end and the case 3 of the feeder has the terminal 22, within which the throat-piece 6 extends, provided with a threaded collar 23, which forms by its upper edge the lower seat for the balls 20, upon which the lower edge of the collar 21 lodges. The throat-piece 6 has at the lower end at diametrically opposite positions-exterior lugs or flanges 25, and the rear or outer end of the chute has its upper wall notched or forked adapting it to be entered onto' the throatpiece from-the side toward the furnace, the opposite sides of the fork or notch in said upper wall having the undercut channels or grooves 2-6, which engage the flanges 25, as seen most clearly in sectional portion of Fig. 1. In order to lock the chute on the throat-piece when it is thus passed onto it to the proper position and at the same time permit its oscillation, I employ a key-bar 28', which bears upon rollers 29, journaled in the upper surface of the forked upper wall of the rear end of the chute and held in position by bolts 30 30, set through the upper wall of the bracket or fuel-intake extension A.

-1 claim 1. An automatic stoker comprising a chute for conducting the fuel substantially horizontally to a position above the fire; a fuel-feeder discharging dmmwardly into the chute, the latter being pivotally supported and adapted to oscillate about its pivot; a nozzle vertically pivoted to the chute and adapted to discharge forwardly theretln'ough; a steam-pipe connectedto the nozzle, and means for actuating the steam-pi pe transversely with respect to the chute to oscillate the latter.

2. An automatic stoker comprising a device for delivering the fuel downward; a throat through which the same is thus delivered; a horizontal chute into which it is delivered, pivotally supported for oscillation about said throat; a steam-nozzle discharging into the chute back of the discharge of the throat longitudinally with respect to the chute to impel the fuel through the latter, said nozzle being pivotallyconncted to the'chute, and means for actuating the nozzletransversely with respect to the chute to oscillate it about its pivotal support. 7

3. An automatic stoker comprising a fuelfeeder consisting of a case; a shaft extending through the case; 'a rotary feeding device carried by the shaft within the case; a throat through which the fuel is discharged downward from the case; a horizontal chute into which it is discharged through said throat mounted-pivotally for oscillation about the latter; a steanrpip'e having a terminal pivotally connected with the chute in position to direct a jet from behind. the throat toward the discharge end of the chute, said "steam-pipe having-flexibleconnections with the source of steam; means operated by the shaft for actuating said steam-pipe in direction to oscillate the chute about the pivotal support of the latter.

1. An automatic stoker comprising a fuelfeeder consisting ofa case having a downwardly-discharging throat; a--chute into which the throat discharges, pivotally mounted for oscillation thereabout; a shaft journaled in the case for rotation, and means thereon within the case for feeding the fuel; a cam on said shaft outside the case, and connections by which said cam oscillates the chute as the shaft revolves,- and means for discharging a steamjet longitudinally through the chute from behind thc fuel-discharge thereinto.

5. An automatic Stoker comprising a fuelfeeder having a throat discharging downwardly; a horizontal chute into which the throat discharges, adapted to-extend into the fire-box and overhang the tire; a steam-discharge'passage fixed with respect to said chute back of the fuel-discharge thereinto, directed forward longitudinally through the chute; a

steam-pipe pivotally connected with the chute and communicating with said discharge-passage, and'means for reciprocating the steampipe to oscillate the chute.

6. An automatic stoker comprising, in combination with the fuel-feeder, the chute into which it discharges downwardly; the steampipe vertically pivoted to the chute and discharging forwardly therethrough, a11d having flexible connection with the boiler; a rotary In testimony whereof I have hereunto set feeding device in the feeder and a shaft which 7 my hand, in the presenceof two witnesses, at 10 operates it; a cam on said shaft exterior to the Chicago, Illinois, this 6th day of April, A. D. feeder and the shaker, 14, hungon the shaft 1903.

and actuated longitudinally thereon by the I i 4 PETER HAMLER. cam, said shaker being connected to the steam- In presence ofpipe for longitudinal reciprocation of the lat- 'FREDK. G. FISCHER,

ter substantially as set forth. J. S. ABBOTT. 

